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Related Concept Videos

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.

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Related Experiment Video

Updated: May 27, 2026

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band
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Analysis of using interpulse intervals to generate 128-bit biometric random binary sequences for securing wireless

Guang-He Zhang1, Carmen C Y Poon, Yuan-Ting Zhang

  • 1Institute of Computing Technology, Chinese Academy of Sciences (CAS), Graduate University of CAS, Beijing, China. gh.zhang@siat.ac.cn

IEEE Transactions on Information Technology in Biomedicine : a Publication of the IEEE Engineering in Medicine and Biology Society
|November 4, 2011
PubMed
Summary

This study demonstrates that biometric sequences derived from interpulse intervals can secure wireless body sensor networks (WBSNs) for m-Health. These lightweight methods offer potential for authentication and encryption, reducing resource demands.

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Last Updated: May 27, 2026

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11:54

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

Published on: March 13, 2017

Area of Science:

  • Biomedical Engineering
  • Cybersecurity
  • Health Informatics

Background:

  • Wireless Body Sensor Networks (WBSNs) are crucial for m-Health but face significant resource constraints.
  • Lightweight security solutions are essential to minimize power and memory consumption in WBSNs.
  • Leveraging existing WBSN data for security purposes presents an attractive, resource-efficient approach.

Purpose of the Study:

  • To evaluate the randomness and distinctiveness of 128-bit biometric binary sequences (BSs) generated from interpulse intervals (IPIs).
  • To assess the feasibility of using these BSs for authentication and encryption in resource-constrained WBSNs.
  • To determine the computational and memory overhead of generating BSs on WBSN nodes.

Main Methods:

  • Generated 128-bit BSs from IPIs of 20 healthy subjects, 30 myocardial infarction patients, and 34 cardiovascular disease patients.
  • Assessed BS randomness and distinctiveness using five U.S. National Institute of Standards and Technology (NIST) statistical tests.
  • Measured the encoding time and memory occupation for BS generation on a simulated WBSN node.

Main Results:

  • Biometric BSs generated from IPIs exhibited sufficient randomness and distinctiveness in both healthy and cardiovascular patient groups.
  • Encoding time averaged 23 ms, and memory occupation was 204 bytes per BS on a WBSN node.
  • NIST test results support the potential of these BSs as unique identifiers for WBSN security.

Conclusions:

  • Biometric BSs derived from IPIs are a viable, lightweight security solution for m-Health WBSNs.
  • These BSs can serve as authentication identifiers and potentially as encryption keys, eliminating the need for key distribution.
  • The proposed method effectively balances security requirements with the stringent resource constraints of WBSNs.